Finding the Fourth Proportional to 157,239.92, 216,990.93 and 85,620.44
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Solution
The fourth proportional to 157,239.92, 216,990.93 and 85,620.44 is: 118,156.12
Step by Step Solution
- Step 1: Write the proportion equation
157,239.92 : 216,990.93 = 85,620.44 : x - Step 2: Convert to fraction form
157,239.92/216,990.93 = 85,620.44/x - Step 3: Cross multiply
157,239.92x = 216,990.93 × 85,620.44 - Step 4: Simplify right side
157,239.92x = 18,578,858,902.61 - Step 5: Solve for x
x = 18,578,858,902.61/157,239.92 - Step 6: Final answer
x = 118,156.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.